See how widely any keyword is registered, and which extensions are still free. Example: "agent" → 412k names, .com taken, .io free.
The exact_match card is the keyword itself as a domain name — "crypto" for the keyword crypto. Its number is how many TLDs that exact name is already registered under. Click it to expand the list: every extension shown is taken, and every common extension missing from the list is still open to register.
matching_domains counts distinct domain names that contain your keyword; registrations (all) adds up how many TLD registrations sit behind them. A high count means the keyword is proven commercially — people keep paying to own names built on it — which is also why the short, clean versions are usually gone.
Registration spread tells you where a keyword lives. A name taken in .com, .net and .io but free in .ai or .app points to an extension that is still an opportunity for branding or acquisition. Run the same keyword in a few variations — singular, plural, hyphenated — to see which shapes registrars have already exhausted.